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On the same day, Baidu said it would merge its music business with one of China's biggest music rights holders, Taihe Entertainment Group, which covers mainland China, Taiwan, Hong Kong, Macau and Singapore.

Taihe holds original rights to over 10,000 compositions and 700,000 recordings, the statement showed.

The deal marked the latest in a string of mergers and acquisitions by China's top three Internet firms.

At the end of October, Baidu took the lead in the online travel sector after two of China's largest online travel firms - Baidu-controlled Qunar and Ctrip - agreed a share swap and partnership deal to create the country's biggest Internet travel service.

Two weeks prior to the deal, China's e-commerce giant Alibaba announced plans to buy outstanding shares of Youku Tudou, the Asian country's equivalent of YouTube, in a deal estimated to be worth US$4.8 billion.